J. F. Penn

When psychologist and religious expert Dr. Morgan Sierra's sister and niece are kidnapped, she's thrust into a deadly race against time to find twelve ancient stones that could unleash unimaginable power.

A marble tablet found in the ruins of Babylon warns of the resurrection of a banished serpent in the final days....

When ARKANE archivist Martin Klein joins the Vatican digital archiving project, he finds an ancient letter mistakenly scanned along with the medieval papal decree Militia Dei, Soldiers of God. It points to a dark secret the Knights Templar once tried to erase from existence....

Evil stalks the city of London at night. Can Detective Jamie Brooke and reluctant psychic Blake Daniel stop the murders before it's too late....

A street cleaner walks into the middle of Trafalgar Square and blows himself up. No mere act of terrorism. The explosion rips open a crater to reveal the underground headquarters of ARKANE — the ultra-secret British agency tasked with investigating the supernatural.

When the mutilated corpse of a wealthy author is discovered, the police officer sent to investigate finds a curious diary amongst the occult objects at the scene. Will he uncover the author's secret at the ruined chapel? Plus two more short stories....

In mid-2020, I was not okay—and I didn't know how to find my way out of that darkness. But I could put one foot in front of the other until I figured it out....

A relic, stolen from the heart of an ancient city. An echo of nationalist violence not seen since the dark days of the Second World War. Budapest, Hungary....

Pastor David Thornwell has lost his wife, his faith, and any reason to keep preaching.

Kadmon wants to open the portal between our world and Hell, to create a twisted, demonic version of our world over which he will reign supreme. Now, Morgan and her partner — Jake Timber, the enigmatic agent who recruited her for ARKANE — are on the run.

Some secrets should stay buried. When renowned architect Arania Webb returns to Bristol Zoo—once her childhood sanctuary but now a derelict ruin—she discovers her late father’s hidden underground lab, which harbors a dark obsession....

When down-on-his-luck busker Evan takes to the streets of Bath during the Christmas market, he hopes his music will earn him enough for a warm meal and bed for the night. But after a violent robbery leaves him broken and destitute, Evan unwittingly awakens an ancient evil....

An agent of Arkane, the British agency tasked with protecting the world from supernatural crises, Morgan knows that giving up the staff could spell the end of all things....

Any wish can be granted: money, power…even death itself can be beaten back. All it takes is the blood of an angel. When a woman is crucified and burned alive in the center of New York City, Jake Timber is already on his way....

Conflict photographer, Sara Miles, loves being embedded with the military out in the desert. Her pictures pay tribute to those who fight, suffer, and die for freedom and the images she captures can turn public perception in the never-ending war....

Cass blows glass for a living. But when she's not cranking out tourist pieces to pay the bills, she creates unique glass art with the dream of winning a prestigious award that might change her life. But Cass has a problem. The heat and intensity of glassblowing have damaged her eyesight....

When a priceless relic disappears from Canterbury Cathedral, ARKANE - the agency tasked with protecting the world from supernatural adversaries - fears the worst…and sends its best. Now, ARKANE agents Morgan Sierra and Jake Timber are on the job....

A place written out of history. A world off the edge of the map. In this fantasy adventure trilogy, Sienna and the Mapwalker team must defend Earthside from the invasion of the Borderlanders and face their darkest challenge against the Shadow....

When a fragment of an ancient manuscript is stolen from a Jewish library in Amsterdam, ARKANE agents Morgan Sierra and Jake Timber discover a conspiracy that stretches back to the days of the Portuguese Empire, and a hidden Order of monks who have protected Eden for generations....

As natural disasters sweep Earthside, a mutant army rises in the Borderlands, driven by the dark force behind the Shadow Cartographers. Sienna and the Mapwalker team must use the Map of the Impossible to journey through the realm of the dead and face the nightmare at its heart....